Examples with LayoutHelper com.alibaba.android.vlayout.LayoutHelper used on opensource projects

Example 6 with LayoutHelper

use of com.alibaba.android.vlayout.LayoutHelper in project Tangram-Android by alibaba.

the class PinBottomCard method convertLayoutHelper.

@Nullable
@Override
public LayoutHelper convertLayoutHelper(@Nullable LayoutHelper oldHelper) {
    LayoutHelper helper = super.convertLayoutHelper(oldHelper);
    if (helper instanceof FixLayoutHelper) {
        ((FixLayoutHelper) helper).setAlignType(FixLayoutHelper.BOTTOM_LEFT);
        ((FixLayoutHelper) helper).setSketchMeasure(true);
    }
    return helper;
}

Example 7 with LayoutHelper

use of com.alibaba.android.vlayout.LayoutHelper in project Tangram-Android by alibaba.

the class TangramEngine method replace.

/**
 * Replace parent card's children. Cells' size should be equal with parent's children size.
 *
 * @param parent
 * @param cells
 * @since 2.1.0
 */
public void replace(Card parent, List<BaseCell> cells) {
    VirtualLayoutManager layoutManager = getLayoutManager();
    if (parent != null && cells != null && cells.size() > 0 && mGroupBasicAdapter != null && layoutManager != null) {
        Card card = parent;
        List<BaseCell> oldChildren = new ArrayList<>(parent.getCells());
        if (oldChildren.size() == cells.size()) {
            card.setCells(cells);
            mGroupBasicAdapter.replaceComponent(oldChildren, cells);
        } else {
            List<LayoutHelper> layoutHelpers = layoutManager.getLayoutHelpers();
            int cardIdx = mGroupBasicAdapter.findCardIdxForCard(parent);
            int diff = 0;
            if (layoutHelpers != null && cardIdx >= 0 && cardIdx < layoutHelpers.size()) {
                for (int i = 0, size = layoutHelpers.size(); i < size; i++) {
                    LayoutHelper layoutHelper = layoutHelpers.get(i);
                    int start = layoutHelper.getRange().getLower();
                    int end = layoutHelper.getRange().getUpper();
                    if (i < cardIdx) {
                    // do nothing
                    } else if (i == cardIdx) {
                        diff = cells.size() - layoutHelper.getItemCount();
                        layoutHelper.setItemCount(cells.size());
                        layoutHelper.setRange(start, end + diff);
                    } else {
                        layoutHelper.setRange(start + diff, end + diff);
                    }
                }
                card.setCells(cells);
                mGroupBasicAdapter.replaceComponent(oldChildren, cells);
            }
        }
    }
}

Example 8 with LayoutHelper

use of com.alibaba.android.vlayout.LayoutHelper in project Tangram-Android by alibaba.

the class TangramEngine method insertBatchWith.

/**
 * @param insertIdx the index to be inserted
 * @param groups    a group list
 * @since 2.1.0
 */
public void insertBatchWith(int insertIdx, List<Card> groups) {
    VirtualLayoutManager layoutManager = getLayoutManager();
    if (groups != null && groups.size() > 0 && mGroupBasicAdapter != null && layoutManager != null) {
        List<LayoutHelper> layoutHelpers = layoutManager.getLayoutHelpers();
        final List<LayoutHelper> newLayoutHelpers = new ArrayList<>(layoutHelpers);
        List<LayoutHelper> insertedLayoutHelpers = new ArrayList<>();
        for (int i = 0, size = groups.size(); i < size; i++) {
            insertedLayoutHelpers.add(groups.get(i).getLayoutHelper());
        }
        if (insertIdx >= layoutHelpers.size()) {
            newLayoutHelpers.addAll(insertedLayoutHelpers);
        } else {
            newLayoutHelpers.addAll(insertIdx, insertedLayoutHelpers);
        }
        layoutManager.setLayoutHelpers(newLayoutHelpers);
        mGroupBasicAdapter.insertBatchComponents(insertIdx, groups);
    }
}

Example 9 with LayoutHelper

use of com.alibaba.android.vlayout.LayoutHelper in project Tangram-Android by alibaba.

the class TangramEngine method insertWith.

/**
 * A high performance method to insert cells. Do not allowed to insert to an empty Tangram. TODO handle nested card
 *
 * @param insertPosition the position to be inserted
 * @param list           new cell data list
 * @since 2.1.0
 */
public void insertWith(int insertPosition, List<BaseCell> list) {
    int newItemSize = list != null ? list.size() : 0;
    if (newItemSize > 0 && mGroupBasicAdapter != null) {
        if (insertPosition >= mGroupBasicAdapter.getItemCount()) {
            insertPosition = mGroupBasicAdapter.getItemCount() - 1;
        }
        BaseCell insertCell = mGroupBasicAdapter.getItemByPosition(insertPosition);
        int cardIdx = mGroupBasicAdapter.findCardIdxFor(insertPosition);
        Card card = mGroupBasicAdapter.getCardRange(cardIdx).second;
        card.addCells(card, card.getCells().indexOf(insertCell), list);
        List<LayoutHelper> layoutHelpers = getLayoutManager().getLayoutHelpers();
        if (layoutHelpers != null && cardIdx >= 0 && cardIdx < layoutHelpers.size()) {
            for (int i = 0, size = layoutHelpers.size(); i < size; i++) {
                LayoutHelper layoutHelper = layoutHelpers.get(i);
                int start = layoutHelper.getRange().getLower();
                int end = layoutHelper.getRange().getUpper();
                if (end < insertPosition) {
                // do nothing
                } else if (start <= insertPosition && insertPosition <= end) {
                    layoutHelper.setItemCount(layoutHelper.getItemCount() + newItemSize);
                    layoutHelper.setRange(start, end + newItemSize);
                } else if (insertPosition < start) {
                    layoutHelper.setRange(start + newItemSize, end + newItemSize);
                }
            }
            mGroupBasicAdapter.insertComponents(insertPosition, list);
        }
    }
}

Example 10 with LayoutHelper

use of com.alibaba.android.vlayout.LayoutHelper in project Tangram-Android by alibaba.

the class TangramEngine method removeBy.

/**
 * Remove target cell. TODO handle nested card, cell in staggered, cell in onePlusN
 *
 * @param data
 * @since 2.1.0
 */
public void removeBy(BaseCell data) {
    VirtualLayoutManager layoutManager = getLayoutManager();
    if (data != null && mGroupBasicAdapter != null && layoutManager != null) {
        int removePosition = mGroupBasicAdapter.getPositionByItem(data);
        if (removePosition >= 0) {
            int cardIdx = mGroupBasicAdapter.findCardIdxFor(removePosition);
            Card card = mGroupBasicAdapter.getCardRange(cardIdx).second;
            card.removeCellSilently(data);
            List<LayoutHelper> layoutHelpers = layoutManager.getLayoutHelpers();
            LayoutHelper emptyLayoutHelper = null;
            if (layoutHelpers != null && cardIdx >= 0 && cardIdx < layoutHelpers.size()) {
                for (int i = 0, size = layoutHelpers.size(); i < size; i++) {
                    LayoutHelper layoutHelper = layoutHelpers.get(i);
                    int start = layoutHelper.getRange().getLower();
                    int end = layoutHelper.getRange().getUpper();
                    if (end < removePosition) {
                    // do nothing
                    } else if (start <= removePosition && removePosition <= end) {
                        int itemCount = layoutHelper.getItemCount() - 1;
                        if (itemCount > 0) {
                            layoutHelper.setItemCount(itemCount);
                            layoutHelper.setRange(start, end - 1);
                        } else {
                            emptyLayoutHelper = layoutHelper;
                        }
                    } else if (removePosition < start) {
                        layoutHelper.setRange(start - 1, end - 1);
                    }
                }
                if (emptyLayoutHelper != null) {
                    final List<LayoutHelper> newLayoutHelpers = new LinkedList<>(layoutHelpers);
                    newLayoutHelpers.remove(emptyLayoutHelper);
                    layoutManager.setLayoutHelpers(newLayoutHelpers);
                }
                mGroupBasicAdapter.removeComponent(data);
            }
        }
    }
}